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gnetism, the declination, inclination, and intensity. (c) See under Element. -- Magnetic equator, the line around the equatorial parts of the earth at which there is no dip, the dipping needle being horizontal. -- Magnetic field, or Field of magnetic force, any space through which magnet exerts its influence. -- Mag…

e root of their product. -- Mean sun, a fictitious sun supposed to move uniformly in the equator so as to be on the meridian each day at mean noon. -- Mean time, time as measured by an equable motion, as of a perfect clock, or as reckoned on the supposition that all the days of the year are of a mean or uniform lengt…

the meridian in Mercator's projection, corresponding to each minute of latitude from the equator up to 70 or 80 degrees; tabulated numbers representing these parts used in projecting charts, and in solving cases in Mercator's sailing.

t was intended to be, and is very nearly, the ten millionth part of the distance from the equator to the north pole, as ascertained by actual measurement of an arc of a meridian. See Metric system, under Metric. Common meter (Hymnol.), four iambic verses, or lines, making a stanza, the first and third having each four…

ass, it is called a divided-object-glass micrometer, and when the instrument is large and equatorially mounted, it is known as a heliometer. -- Double refraction micrometer, a species of double image micrometer, in which the two images are formed by the double refraction of rock crystal. -- Filar, or Bifilar, microme…

., 2. -- North pole, that point in the heavens, or on the earth, ninety degrees from the equator toward the north. -- North preceding. See Following, a., 2. -- North star, the star toward which the north pole of the earth very nearly points, and which accordingly seems fixed and immovable in the sky. The star a (alp…

The distance of any heavenly body from the equator northward; north declination.

place; or as it appears to an observer at any point on the earth except the poles and the equator. -- Oblique step (Mil.), a step in marching, by which the soldier, while advancing, gradually takes ground to the right or left at an angle of about 25º. It is not now practiced. Wilhelm. -- Oblique system of coördinates…

arity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator.

A large and bright constellation on the equator, between the stars Aldebaran and Sirius. It contains a remarkable nebula visible to the naked eye. The flaming glories of Orion's belt. E. Everett.

One of the imaginary circles on the surface of the earth, parallel to the equator, marking the latitude; also, the corresponding line on a globe or map.

, circle, or other curve; as, the plane of an orbit; the plane of the ecliptic, or of the equator.

point; as, polar coördinates. Polar axis, that axis of an astronomical instrument, as an equatorial, which is parallel to the earths axis. -- Polar bear (Zoöl.), a large bear (Ursus, or Thalarctos, maritimus) inhabiting the arctic regions. It sometimes measures nearly nine feet in length and weighs 1,600 pounds. It i…

y the action of the sun, moon, and planets, upon the protuberant matter about the earth's equator, in connection with its diurnal rotation; -- so called because either equinox, owing to its westerly motion, comes to the meridian sooner each day than the point it would have occupied without the motion of precession, and…

ojections are made, generally coinciding with some principal circle of the sphere, as the equator or a meridian. -- Primitive rocks (Geol.), primary rocks. See under Primary. -- Primitive sheath. (Anat.) See Neurilemma. -- Primitive streak or trace (Anat.), an opaque and thickened band where the mesoblast first appe…

are straight lines whose distance from each other increases with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. -- Oblique projection, a projection made by parallel lines drawn from every point of a figure and mee…

h is the more specific word in this sense. If the earth revolve thus, each house pear the equator must move a thousand miles an hour. I. Watts.

Ham. Nav. Encyc. -- Right sphere (Astron. & Geol.), a sphere in such a position that the equator cuts the horizon at right angles; in spherical projections, that position of the sphere in which the primitive plane coincides with the plane of the equator.

A portion of the southern equatorial current flowing westward from the Fiji Islands to New Guinea.

ing, as a wheel; rotary; rotational. This high rotative velocity of the sun must cause an equatorial rise of the solar atmosphere. Siemens. Rotative engine, a steam engine in which the reciprocating motion of the piston is transformed into a continuous rotary motion, as by means of a connecting rod, a working beam and…